$ git clone -n https://src.fedoraproject.org/rpms/ddnet.git /var/lib/mock/f42-build-side-1-3503847-45982/root/chroot_tmpdir/scmroot/ddnet
Cloning into '/var/lib/mock/f42-build-side-1-3503847-45982/root/chroot_tmpdir/scmroot/ddnet'...
$ git fetch origin 248c290a789ad3a3221c44c4d2dda6ceb312c790:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ddnet
 * [new ref]         248c290a789ad3a3221c44c4d2dda6ceb312c790 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 248c290 Merge branch 'f41'